Perhaps you should try some spelling variations:
petriiiov » peteriiiov (Expand Search), petriiiiov (Expand Search), petruiiiov (Expand Search)
petroiiiiov » peteroiiiiov (Expand Search), petrioiiiiov (Expand Search), petruoiiiiov (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petruuiu (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search)
petroiou » peteroiou (Expand Search), petrioiou (Expand Search), petruoiou (Expand Search)
petrioiou » peterioiou (Expand Search), petriioiou (Expand Search), petruioiou (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((petriiiov OR petroiiiiov) OR ((petruiu OR (petrou OR (petroiou OR petrioiou))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiov OR petroiiiiov) OR ((petruiu OR (petrou OR (petroiou OR petrioiou))) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriiiov OR petroiiiiov) OR ((petruiu OR (petrou OR (petroiou OR petrioiou))) OR petr)) o.s.*.